Rotary buffing and polishing machine



L: H BURNHAM I ROTARY BUFFING AND POLISHING MACHINE Filed March 26, 19482 Sl-IEETS-SHEET 1 May 27 1952 May 27, 1952 L. H. BURNHAM ROTARY BUFFINGAND POLISHING MACHINE 2 SHEETSSHEET 2 Filed March 26, 1948 Im/mtar AmeH. Bamlzzam Patented May 27, 1952 ROTARY BUFFING AND POLISHING MAC HINE

Lee H. Burnham, North Platte Nebr. Application March 26, 1948, SerialNo. 17,157

9 Claims. 1

This invention relates to new and useful improvements in bufling andpolishing machines and the primary object of the present invention is toprovide a bufiing and polishing machine including a novel and improvedpolishing cloth supporting head.

Another important object of the present invention is to provide abufling and polishing head including a rotary member and novel andimproved means for lockably securing a polishing or bufiing clothsupporting element relative to the rotary member.

A' further object of the present invention is to provide a portablebuffing and polishing machine so designed as to permit the same to beconveniently balanced and handled by one person for use in buffing orpolishing work in such a manner as to relieve the normal strain upon ausers wrist.

A still further aim of the present invention is to provide a buffing andpolishing machine that is simple and practical in construction, smalland compact in structure, strong and reliable in use, neat andattractive in appearance, relatively inexpensive to manufacture, andotherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawi'ngs forming part hereof, whereinlike numerals refer tolike parts throughout, and in which:

Figure l is a perspective View of the present buffing and polishingmachine;

Figure 2 is a horizontal sectional view taken substantially on the planeof section line 2-2 of Figure 4, and showing the handle removedtherefrom;

Figure "3 is a fragmentary group perspective view showing the lowerportion of the rotatable gearing supporting member and the manner inwhich the same is applied to the pad supporting plate (shown in part);

Figure 4 is a longitudinal vertical sectional view'of the presentbuffing and polishing machine taken substantially on the plane ofsection line 4-4 of Figure 2; and,

Figure 5 is a reduced horizontal sectional view taken substantially onthe plane of section line 5-5 of Figure 4;

Referring now to thedrawings in detail, wherein for the purpose ofillustration, there is disclosed'a preferred embodiment of the presentinvention, the numeral lll'i'e'presents an annular housing or casinghaving a depending annular flange portion 12 constituting a peripheralwall. Integrally formed with the casing l0 about an eccentricallydisposed opening l4 provided in the casing in, is an upstandingcylindrical or sleevelike upper casing it having an integral closure orupper wall [8.

Fixed within the upper casing I6, is circular bearing plate having aplurality of openings 22 and an annular central portion 24 that supportsa sleeve 25 that rotatably engages one end 28 of'the drive shaft 30 ofan electric motor 32 mounted within the upper casing It. The oppositeend 34 of the drive shaft 30 projects outwardly from the motor 32 and isrotatably positioned in a bearing sleeve 36 mounted in a socket 38 thatdepends from the upper Wall [8.

Rigidly secured to the inner periphery of the flanged portion I2, is aplurality of circumferentially spaced attaching ears 40 that areremovably secured to an annular bearing and support ring 42.Frictionally and rotatably positioned on the upper face of the ring 42,is an annular dish-like gear supporting member 44 having a plurality ofannular heat reducing openings 45 and a central recess 46 that rotatably engages a fixed cylindrical guide 41 mounted on the casing It forguiding the rotary movement of the member 44 on the bearing and supportring 42. Fixed in an annular recess 48 in the inner face of the flangedportion 50 of the member 44, is a ring gear 52 that intermeshes with apinion 54 fixed on the end 28 of the drive shaft 30 for effecting arotation of the member 44 by the drive shaft 3i] of the motor 32.

Integrally formed with and depending from the lower face and centralportion of the member 44 is a spacer sleeve or cylindrical body portion56 having an annular flanged portion 58 at its lower end that isprovided with a plurality of circumferentially spaced key slots 60.

The numeral 52 represents a circular dish-like pad holding member havingan upstanding annular wall 64. Fixedly secured in circumferentiallyspaced apertures 56 provided in the pad holding member 62, are thereduced end portions 68 of a plurality of locking lugs 10 havingenlarged body portions 12 that space the annular flanged portion 58 fromthe dish-like pad holding member 62. Rigidly secured to the lugs 10 aresubstantially conical head portions 14 having annular shoulders 16 thatfrictionally engage the upper face of the annular flanged portion 58when the lugs are lockably engaged in the key slots 60.

Frictionally embracing the pad holding member 62 is a buffing, polishingor sanding pad or cloth '18 one edge 80 of which is folded over the wall64 and positioned in the member 62. A split band 82 is frictionallymounted in the member 62 to retain the cloth 18 relative to the member62.

The numeral 84 represents an annular handle or hand grip having an innernotched portion 85 that engages a portion of the outer surface of thecasing I6 and is secured thereto by a bolt or the like 86. Integrallyformed with the hand grip 84, is a depending support or lug 88 which isprovided with an internally threaded aperture 90. Extending upwardlythrough the upper wall of the casing I0, is a holding bolt 92 thatreceivably engages the aperture 90, as best shown in Figure 4 of thedrawings.

It should be noted, that a suitable switch 94 is fixed to the outersurface of the casing I6 and is electrically connected to the motor 32for controlling the latter.

In order to remove the pad holding member 62 from the flanged portion53, it is merely necessary to rotate the member 62 while the sleeve 55is fixed so that the locking lugs 10 engage the larger portions of thekey slots 60.

In view of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of theconstruction, operation and advantages of the device will be quiteapparent to those skilled in this art. A more detailed description isaccordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a preferred embodiment of the invention the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A bufling and polishing machine comprising a lower annular housinghaving an eccentrically disposed opening, an upper casing integrallyformed with said housing and extending upwardly therefrom, said casingbeing disposed about the opening and eccentrically mounted with withrespect to said housing, an endless handle disposed concentric of andfixed to the housing and embracing said casing, said handle having aportion secured to the casing for bracing the casing to the housing, abearing ring mounted in said housing and having an inner surface, a

supporting member bearing on the inner surface of said ring for rotationand solely supported by said ring, means mounted in said housing andsaid casing and operatively connected to said supporting member fordriving said supporting member, means mounted in the housing forcentering said supporting member relative to the housing, and a surfacetreating member detachably carried by said supporting member, saidhousing being open at its lower end with the surface treating memberprotruding therethrough. 2. The combination of claim 1 wherein said lastmentioned means includes a guide fixed in said housing, said supportingmember having a central recess receiving said guide.

3. A buffing and polishing machine comprising an annular housing havingan eccentrically disposed opening, -a casing integrally formed with saidhousing and extending upwardly therefrom, said casing being disposedabout the opening and eccentrically mounted with respect to saidhousing, an endless handle disposed concentric of and fixed to thehousing and embracing said casing, said handle having a portion securedto the casing for bracing the casing to the housing, a bearing ringmounted in said housing. and having an inner surface, a supportingmember bearing on the inner surface of said ring for rotation and solelysupported by said ring, means mounted in said housing and said casingand operatively connected to said supporting member for driving saidsupporting member, means for centering said supporting member relativeto the housing, and a surface treating member detachably secured to androtatable with said supporting member, said housing having an open lowerend and said surface treating member protruding through the open lowerend of said housing.

4. The combination of claim 1 wherein said means for driving saidsupporting member includes a motor having a drive shaft, and a pinion onsaid drive shaft, said supporting member including a ring having aninternally toothed edge engaging said pinion.

5. In a bufling and polishing machine, an annular housing including anopen lower end and an upper wall having an eccentric opening therein, acylindrical casing integrally formed with said housing about saidopening and extending upwardly from the housing, a supporting memberrotatably supported in said housing, means secured to the supportingmember and protruding through the open end of said housing forsupporting a surface treating member, power means mounted in said casingand operatively connected to the supporting member for rotatin thelatter, and an endless handle secured to the upper wall of the housingand disposed concentrically of said housing and embracing said casing,said casing being disposed eccentrically of the handle and said handlehaving a portion secured against said casing to brace the casing to thehousing.

6. In a bufl'ing and polishing machine. an annular housing having aneccentric opening therein, a cylindrical casing integrally formed withsaid housing about said opening, a supporting member rotatably supportedin said housin power means mounted in said casing and 9118;.- ativelyconnected to the supporting member for rotating the latter, a handlesurrounding the casing and disposed concentric of said housing, saidhandle being secured to said housing and having a portion securedagainst the casing, said supporting member including a cylindrical bodyportion having a flanged ortion disposed exteriorly of the housing andadapted to be secured to a surface treating member, .and a supportingring mounted in the housing upon which said supporting member isrotatably mounted.

7. The combination of claim 6 wherein said supporting member includes anannular recess, an internally toothed ring gear mounted .in vsaidrecess, said power means including a drive shaft entering the housingthrough the opening. and a pinion on said shaft engaging the teeth ofthe ring gear.

8. The combination of claim 6 wherein vsaid supporting member includes acentral recess, and a fixed cylindrical guide within the housing .andseated in said central recess to center the supporting member in thehousing.

9. In a polishing and buifing machine, a cylindrical housing includingan upper wall and a depending peripheral wall,-said upper wall :havingan eccentric opening therein, an upstanding oylindrical casingintegrally formed with said upper wall about said opening, a ringsecured to said peripheral wall and mounted in said housing, asupporting member, a cylinder fixed to and depending from said memberand having a lower flanged portion adapted to be secured to a surfacetreating member, said supporting member resting directly upon said ringfor rotation, a cylindrical guide secured to the upper wall of saidhousing and positioned in said housing, said supporting member includinga central recess receiving said cylindrical guide to center thesupporting member within the housing, a power means mounted in saidcasing and operatively connected to said supporting member for rotatingthe supporting member, and a ring-shaped handle disposed concentric ofsaid housing and surrounding the casing, said handle including a portionsecured to and against said casing and a supporting lug secured to saidupper wall.

LEE H. BURNHAM.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,000,696 Schlueter Aug. 15, 19111,667,329 Menzel Apr. 24, 1928 1,979,527 Bissell Nov. 6, 1934 2,008,260Reineman July 16, 1935 2,014,119 Stecker Sept. TO, 1935 2,103,444 BauchDec. 28, 1937 2,114,966 Myers Apr. 19, 1938 2,173,350 Bissell Sept. 19,1939 2,289,117 Harrison July 7, 1942 2,300,138 Steele Oct. 27, 19422,417,620 Soderberg Mar. 18, 1947 FOREIGN PATENTS Number Country DateGreat Britain Sept. 7, 1934

